/Engine/Source/Runtime/Core/Public/Misc/ConfigCacheIni.h
Write this ConfigFile to the given string, constructed the text from the config sections in *this, prepended by the optional PrefixText
void WriteToString ( [FString](API\Runtime\Core\Containers\FString) & InOutText, const [FString](API\Runtime\Core\Containers\FString) & SimulatedFilename, const [FString](API\Runtime\Core\Containers\FString) & PrefixText )